In order to improve the work efficiency of the production workshop and meet the needs of energy saving and consumption reduction of enterprises, a standard automatic sorting control system based on machine vision was designed. It solves the problem of standard parts sorting in the production workshop, replaces the traditional sorting method, improves sorting accuracy and efficiency, and conforms to the development of modern industrial control. The system consists of an image acquisition system, an image processing system and a pneumatic sorting equipment controlled by a hardware PLC. The image acquisition and processing system is the core module of this design. An image processing system based on machine vision is established with LabView as the research platform. The image acquisition of the workpiece in the work area is performed, and the Visual Assistant software is used to program to achieve visual modeling. Complete the feature extraction and measurement of the workpiece, and successfully transfer the sorting signal to the actuator through the computer.